Watt-Level Quasi-Optical Mono1ithic Frequency Multiplier Development

Sources of millimeter wavelength power for heterodyne receiver local oscillator applications conventionally have been expensive and short-lived klystrons, or Gunn devices (both of which are limited to relatively low frequencies). An alternate approach is to use efficient, broad band frequency multipliers in conjunction with more reliable, lower frequency oscillators to provide power. To obtain sufficient power for large receiver arrays we have employed quasi-optical arrays of devices which have been fabricated monolithically. Multipliers devices under investigation include both varactor diodes and negative resistance devices.